Optical communications will provide significant benefits for missions, including bandwidth increases of 10 to 100 times more than radio frequency systems.

The new Avalight-HPLED is a compact, low-cost light source designed for fluorescence applications. This high-power version was made for more demanding ...

From October 2013 through April 2014, LLCD demonstration laser communications during the Lunar Atmosphere and Dust Environment Explorer (LADEE) mission.

High-resolution encoders provide incredibly detailed feedback on the motorized stage's angular position. Sophisticated control systems allow for precise programming and execution of complex movements. These stages are commonly used in life science and diagnostic instruments, metrology (the science of measurement), micromachining (creating tiny components), optics alignment, and other fields where precise rotational positioning is critical.

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Our RTR™ precision rotary stages are equipped with stiff crossed roller bearings and a precision worm gear drive to ensure outstanding angular accuracy and repeatability. Our DRT™ series stages utilize the direct drive technology and offer ultra-compact design.

Our motorized rotary stages use a variety of bearing and actuator technologies. For very stiff angular positioning at low to medium speeds, we use precision lapped worms and worm gears driven by a stepper or servo motor. Worm gear drive is especially valuable if the payload is offset and the system experiences a static torque. For the highest speed and precision, we recommend direct drive rotary tables such as our DRT series.

OPALS is a technology demonstration aboard the International Space Station designed to test the use of focused laser energy for space communications.

NASA uses lasers to send information to and from Earth, employing invisible beams to traverse the skies, sending terabytes of…

While our rotary stages can be used as complete single-axis positioners, in many cases they are integrated with additional linear or rotary axes. A common example is to add a rotation stage to the top of an XY stage. In this case, it is important to consider the total range of travel. For applications where the payload must be aligned after loading it onto the stage stack, a limited travel of +/- 5 degrees may be sufficient. In other applications, 360-degree or unlimited rotation may be required.

It would take roughly nine weeks to transmit a complete map of Mars back to Earth with current radio frequency systems. With lasers, it would take about nine days.

NASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery.

The critical move to optical communications will provide numerous benefits to NASA’s user missions. For all its benefits, optical communications still faces several challenges.

Motorized RotationMount optics

4COATING FILM LENS: The 4X objective lens is coated, has high transmittance and refractive index, making it less prone to scratches, fragmentation, or wear. 5 ...

Motorized RotationStage Thorlabs

Achromatisch 100x/1,25 DIN objectief. Parafocaal 45 mm.

Precision in rotation refers to the ability of a rotary stage to achieve and maintain a desired angular position with minimal error. It's about how accurately and reliably the stage can move to a specific angle and stay there. This is quantified by several parameters, including:

Optical communications systems are ideal for missions because they need less volume, weight, and power. Less mass means more room for science instruments, and less power means less of a drain of spacecraft power systems.

O2O will leverage laser communications on the Orion spacecraft, enabling live, ultra-high-definition video feeds between astronauts and Earth.

Direct driverotationstage

Both radio waves and infrared light are electromagnetic radiation with wavelengths at different points on the electromagnetic spectrum.

High-precision rotary stages are essential in applications where even minor angular deviations can significantly impact the quality or performance of the task at hand. For example, in fluorescence microscopy, a tiny error in rotation could lead to inaccurate localization of fluorescent molecules, compromising the analysis of cellular structures and processes.

Although optical communications systems reduce size, weight, and power requirements, the entire Laser Communications Relay Demonstration (LCRD) payload is actually the size of a standard king-sized mattress!

When a stage is referred to as having uniform rotary motion, this means that the moving table’s velocity and direction of motion is constant. Rotation stages can have variations in their rotary motion, however. For example, inertia can influence rotary motion in certain ways. Objects that have lots of inertia will require much more energy to change their velocity or position and require more motor torque.

SWIR Imaging: An Industrial Processing Tool ... Short-wave infrared (SWIR) imaging with InGaAs-based cameras is well suited to nondestructive identification of ...

No, our standard motorized rotary stage has only 1 limit switch. The switch is typically wired to pin 2 on the limit encoder connector. The limit switch is intended to be used for homing. The homing routine will work with an initial positive or negative jog move of the motorized rotary stage until the limit switch triggers. If an encoder is also used, the home or zero position can then be set at the point where the limit switch is triggered.

The RTR™ series precision rotation stages are available in 4-, 6-, 8-, 10-, and 12-inch diameter that include a preloaded, anti-backlash drive assembly to provide exceptional angular accuracy and repeatability.

Motorized rotationstages

The infrared light used for laser communications differs from radio waves because the infrared light packs the data into significantly tighter waves, meaning ground stations can receive more data at once. While laser communications aren’t necessarily faster, more data can be transmitted in one downlink.

ManualRotationStage

Launched on December 7, 2021, the Laser Communications Relay Demonstration (LCRD) aims to showcase the unique capabilities of optical communications.

The DSOC package will be aboard NASA's Psyche mission and utilizes photons to transmit more data in a given amount of time.

NewportRotationStage

50 mm, 3-5 µm, f/2.5 MWIR FPO Manual Bayonet Lens for FLIR R&D/Science cameras, including A67xx MWIR, A85xx MWIR, X68xx MWIR, X69xx MWIR, and X85xx MWIR.

Since the beginning of spaceflight in the 1950s, NASA missions have leveraged radio frequency communications to send data to and from space. Optical communications, also known as laser communications, will further empower missions with unprecedented data capabilities.

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Our DOE enables low 0th order transmission, wide FOV, and large number dot projection. Using glass, our DOE also has high reliably against thermal, humidity, ...

NASA’s Laser Communications Relay Demonstration (LCRD) is demonstrating NASA's first two-way laser relay communications system, sending and receiving data over invisible infrared lasers from its location in geosynchronous orbit with ground stations in California and Hawaii.

Thorlabs'RotationStage

Rotary motion is perhaps the most common and important types of motion and also the most widely used in every part of our daily lives.

Rotary stages are available in two primary types: manual rotary stages, which use hand-operated knobs or micrometers for precise but non-automated adjustments, and motorized rotary stages, which are equipped with electric motors for automated, programmable, and highly accurate rotational motion.

A rotary stage is a device that provides precise rotational movement for a workpiece or sample. It typically consists of a platform that rotates, a drive mechanism, and a bearing system. The platform is where you mount the object you need to rotate. The drive mechanism provides the force to turn the platform. Motorized drives offer greater precision and the ability to program specific movements. The bearing system ensures smooth, accurate motion with minimal friction or wobble. This is critical for achieving the precise positioning required in many applications. Some rotary stages also incorporate feedback devices, such as encoders, to provide precise position information, allowing for closed-loop control and highly accurate positioning.

OCSD, consisting of three CubeSats launched in 2017, conducted the first-ever high-speed laser communications downlink from a CubeSat to a ground station.

A rotation stage, also known as a rotary stage, restricts motion to a single axis of rotation and precisely controls the circular position for that axis of rotation. Dover Motion offers a range of standard high precision rotary stages and rotary tables, though our core strength is collaborating with our clients to configure the right precision motion solution for their unique application.

Motorized RotationMount

The DRT-100 and DRT-200 series direct drive rotation stages are ultra-compact, direct-drive rotation stages that establish a new level of price, performance, and size. wdt_ID Travel 360 degrees 1 Accuracy +/- 150 urad 2 Repeatability +/- 5 urad 3 Payload 100 kg

As science instruments evolve to capture high-definition data like 4K video, missions will need expedited ways to transmit information to Earth. With laser communications, NASA can significantly accelerate the data transfer process and empower more discoveries. Optical, or laser, communications will enable 10 to 100 times more data transmitted back to Earth than current radio frequency systems.

The total microscope magnification is the product of the magnification factors of both lenses. For example, a 40x objective lens and a 10x eyepiece provide ...

Rotary motion, also referred to as theta, rotational motion or circular motion, occurs when an object rotates or spins about an axis. This type of motion is analyzed in much the same way as linear motion. The motion may be uniform or non-uniform, but it must be circular.

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Rotary stages, including high precision rotary stages, can also be mounted to each other, allowing the customer’s part to be rotated in multiple axes. In one such example we designed a stack of three rotary tables that was used to move a miniature spherical laser fusion target in three rotational degrees of freedom during laser micromachining.

Rotary positioning stages are specialized types of rotary stages designed for applications demanding the highest levels of precision and accuracy in positioning. These stages are perfect for tasks like precisely rotating a delicate sample under a microscope, even by tiny fractions of a degree. They often feature advanced bearing systems, such as air bearings, to minimize friction and vibration.